1 - How the Body Moves - Muscular System

Which of these muscle types contracts involuntarily?

• Skeletal

• Cardiac

• Smooth

• Striated

Which of the following athletes would have a high level

of Type IIa muscle fibres?

• Marathon Runner

• 1500m swimmer

• 400m Runner

• 100m Sprinter

What type of muscle fibre would be dominant amongst the athletes pictured here?

• Type I

• Type IIx

• Type IIa

What muscle fibres are the most dominant

amongst those athletes pictured?

• Type I

• Type IIa

• Type x

What body movement is this muscle most responsible for?

• Leg Internal Rotation

• Leg Flexion

• Leg Adduction

• Leg Extension

Which muscle is responsible for flexion of the arm at the elbow?

Muscles are attached to bone by ________.

The _________ is the end of the muscle that is attached to a fixed bone does that not move during a contration.

• Origin

• Insertion

What contraction is occurring in the gastrocnemius muscle during the downward phase of a calf raise?

• Isotonic Eccentric

• Isotonic Concentric

• Isometric Eccentric

• Isometric Concentric

The __________ is the end of the muscle that is attached to the bone that moves when the muscle contracts.

• Origin

• Insertion